diff --git a/zuul/site-variables.yaml b/zuul/site-variables.yaml
index bc209f3723..6f3eb5e7a2 100644
--- a/zuul/site-variables.yaml
+++ b/zuul/site-variables.yaml
@@ -5,6 +5,6 @@ zuul_site_traceroute_host: git.openstack.org
 zuul_site_image_manifest_files:
   - /etc/dib-builddate.txt
   - /etc/image-hostname.txt
-zuul_output_dir: "{{ ansible_user_dir }}/zuul-output
+zuul_output_dir: "{{ ansible_user_dir }}/zuul-output"
 bindep_command: /usr/bindep-env/bin/bindep
 bindep_fallback: /usr/local/bindep-fallback/bindep-fallback.txt